x(x+2)=112

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Solution for x(x+2)=112 equation:


Simplifying
x(x + 2) = 112

Reorder the terms:
x(2 + x) = 112
(2 * x + x * x) = 112
(2x + x2) = 112

Solving
2x + x2 = 112

Solving for variable 'x'.

Reorder the terms:
-112 + 2x + x2 = 112 + -112

Combine like terms: 112 + -112 = 0
-112 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '112' to each side of the equation.
-112 + 2x + 112 + x2 = 0 + 112

Reorder the terms:
-112 + 112 + 2x + x2 = 0 + 112

Combine like terms: -112 + 112 = 0
0 + 2x + x2 = 0 + 112
2x + x2 = 0 + 112

Combine like terms: 0 + 112 = 112
2x + x2 = 112

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 112 + 1

Reorder the terms:
1 + 2x + x2 = 112 + 1

Combine like terms: 112 + 1 = 113
1 + 2x + x2 = 113

Factor a perfect square on the left side:
(x + 1)(x + 1) = 113

Calculate the square root of the right side: 10.630145813

Break this problem into two subproblems by setting 
(x + 1) equal to 10.630145813 and -10.630145813.

Subproblem 1

x + 1 = 10.630145813 Simplifying x + 1 = 10.630145813 Reorder the terms: 1 + x = 10.630145813 Solving 1 + x = 10.630145813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 10.630145813 + -1 Combine like terms: 1 + -1 = 0 0 + x = 10.630145813 + -1 x = 10.630145813 + -1 Combine like terms: 10.630145813 + -1 = 9.630145813 x = 9.630145813 Simplifying x = 9.630145813

Subproblem 2

x + 1 = -10.630145813 Simplifying x + 1 = -10.630145813 Reorder the terms: 1 + x = -10.630145813 Solving 1 + x = -10.630145813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -10.630145813 + -1 Combine like terms: 1 + -1 = 0 0 + x = -10.630145813 + -1 x = -10.630145813 + -1 Combine like terms: -10.630145813 + -1 = -11.630145813 x = -11.630145813 Simplifying x = -11.630145813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.630145813, -11.630145813}

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